The former top Detroit Medical Center cardiologist is suing the health system, arguing he was forced out of his job for complaining about alleged fraud at the health system, including unnecessary surgeries billed to Medicare and Medicaid. The wrongful discharge and retaliation lawsuit was filed in Detroit U.S. District Court by Dr. Ted Schreiber, who developed a trademarked process to speed life-saving treatment for heart attack patients after joining the DMC in 2008.